The following paragraph explains how to embed diagrams as a picture (.png).
Embedded diagrams will automatically show the latest version, so there is no need to embed it again each time the diagram is updated.

To embed a diagram as a picture, proceed as follows:

First, select the diagram you want to embed in the Explorer.

Then select in the menu Share the Embed diagram entry.
The Embed diagram dialog opens.

In the tab Simple image a link to the picture representation is provided.
Everyone who has access to this link can view the diagram, but not edit or comment.